Log bunk



Aug. 14,* 1945. .F. w. cHRlswELl.

LQG BNK Filed Jan.' 14, 1,942 `2 Sheets-Sheet. 1

Heroin/cx M CHP/ swag All2- 14, 1945 F. w. cHRlswELL 2,382,002

i LOG BUNK 2 Filed'Jan. 14, 1942 '2 sheets-sheet 2 www ,Illlllllnw'iinauf Patented Aug. 14, 1945 y 2,382,002 LoG BUNK` A.limita-ick w.chrisweli, saitle,flvvsii' l,gassigner' to Pacific Car andFoundryCompany, Renton,`

` Wash.

This invention relates to log bunks or bolsters of that type equippedwith chocks or stakes which may be released from the side ofthe car.

,The main object of this invention is to improve upon the structure ofthe bolster shown and described inY my prior Patents Nos. 1,224,276-

of Mayv 1, 1917,*and 1,569,613 of January 12, 1926, by eliminating thecast bunk filler and simplifying the bunk body structure, so that thelatter may be made entirely of structural material and yet besufliciently strongand vdurable tol withstand the wear to whichstructures of this type are normally subjected. V f

-Another`4 object. resides inv the provision of a slot andpin supportfor the chock, in lieu of the guideway and trunnionsheretoforeprovidedgin they art. 4 V

*Other novel features forproviding an inexpensive yet durableStructur'ewill be found in thedetails lof construction and arrangementof parts more fully shown vand described in the following specificationand illustrated by the accompanyingdrawingsinwhich .v I'

Fig. 1 Vis atop plan'view.

lig. 2.ils a perspective. partly in section, and.. partly exploded toshow thestakapin and guide slots;

portions ofwthe sidewalls and 2 are formed thelongitudinally extendingslots vI4, these slotsbeingqrelativelyshortin length and arranged in` acommonhorizontal plane at each Vend of each'- side-wa1l.'-;.Welded totheginner--faces at eachI end :of thefside walls` Iand-2"are thereinforcing.:

blocks or plates I5 each wit-h longitudinally disposed slots I6'registering with the adjacent slot y in ,f-the4 side-wall toiwhich itis attached. Thisarrangementfreinforces vthe-Web structure of thesidewalls I-and` 2W aboutthe slots and also increasesthe supportingguidesurfaces of the pins which travellin `the slots `ashereinafter morefully described... .Secured'to :each .end Vof each of the side.Witlls-Iyand 2 ,by weldingarethe guide bars or .rails II and I8, these guidebarsorrails bebrace120. \Ihecross.brace2ll.is in the form` of a web'connecting the loi/ver marginal portions of Fig. 3 is a Afragmentarysideielevation vof one end of the device.

Fig. 4 is a iengitudinal ver-ucm section of one end portion of thekstructure.

'Fig'.-5 is'a'n end elevation, and

Fig; 1. n l

"l'lie'pes'ent embodiment includes a bunkbody and stake Amechanismtherefor. The bolster is yFig.v 6` is a' transverse section on line2v G-Sffof assembled-from structural'material and includes the side walls Iand 2 formed of bulb angles, set

upright with their bottom flanges. 3 and v4 extending laterallyoutwardto provide suitablefsuprr porting surfaces. Interposed betweentheupper marginal portions of the'upright bulb angles I and 2 is ahorizontally disposed I-beain including-the 'web 5,v upper anges 6 anddepending flanges 1. This I-beani is welded tothe inner faces ofthe bulbangles in a manner to pe'r-- mit its upper anges 6 to projectsubstantially I above the latter.A The end portions of the web 5 and theend portions of the depending ilanges.

'l ofthe I-beam are cut away as at 8 in Figs.` 4

and 5 to provide for'the positioning andmove- I ment of the stakes 9. Itwill be noted that the centrally cut-out'portions-of the web 5 includesthe slots II which receive the web like braces I2 of the stakes. Beneaththe upper marginal bulb ing Vpositiorfiecl.at their upper: endsv I8outwardlyv of tlieslotsl I5 andfcurving downwardly and inwardly toterminate. in the substantially vertical portions I 9 against. whichabutsthe cross thesidehjwalls I and 2 and' functions to reinforce and'retainthe.lattery in their relative positions andA also' toV'cooperfatfe vi'rithother movable Vparts to'be hereinafter described.It will be noted n -`welded at'V their extremi-` sde Wallsand bars'stake"includesv the4 body portion 21|y of ar n width to snuglylex'i'g'age within the walls 9 defin- ,l ing the cut-out portinA of theweb of 'the'top member 5 and of a height suitableto retainapredetermined load in the'n usual manner; At' the base of the body ofthe stakes 9 are the laterally extending lugs orboss'es'22'i whichyengage the top en'd portions" 23 "and" 4the louter faces' 24' of" theguide members'll' and- I'8. Pivot arms 25 extend" at right langles`inwardly of the body 2I ofy f thestake and are formed with transverseaxially alined pin receiving'openingsfs. A pin 21 extends through theseopenings "in the 'ends of the pivot arms'and engages Within and travelsthroughout the length ofthe slots Il formedin the side plates I and 2and the slots I6 formed in the reinforcing plates or'blocksl securedabout these openings; :Crosspinsv 28 extend through the extremi ities ofthe"pin`2'l to securethe latteragainst"` displacement. `Acontroll lockarm'30 'is pivoted to' each pin 21 intermediate the spaced pivot'arms:25 andy includes the shank 3I which terminates l at-its freeeridfinfenlarged head32 and dependingwange v33'. Thecontrolarms'extendsub` stantially the length of the bunk to engage crossbraces 34 leach of which is shaped to cooperate l minimum of time andlabor.v

with the enlarged head 32 and the depending "ange 33 in a manner wellknown in theart.

As in my prior Patent No. 1,569,613 I have provided the transverselyextending upwardly inclined webs 34 whichI extend outwardly of the innerwalls of the uprights I and 2 and are sep cured to these walls4 and tothe inner inclined faces 35 of the slottedrblocks l5?. This arrange- 1ment of the inclined web 34 immediately above `the locked position ofthe enlarged end 32 vof the shank 3| will cause an initial movement of lthe associated stake downwardly when the shanl'rl :I i 3| of the controlbar is lifted. This movement is termediate said arms, and a-horizontalbeam having flanges at its outer edge portions connecting the upperportions of said side walls,.said flanges projecting above the upperedges of said Walls.

2. In combination,A a bunk including spaced side walls andwaconnectingbeam, .said beam including' upperflanges norvmrtllyf extendingabove saidside walls and having its web cut away at each end to providestake receiving pockets,

" longitudinally extending slots -formed in each essentially broughtabout because` ofthe normal.

path of movement of the enlarged" head 3|' in its travel in contact withthe inclined Web 34. AIt will be noted that the projecting webs34ftermir'ratel short of the path of movement of the sharikslLA of thecontrol arms as is clearly shown in Fig. 6L

From the. foregoing it willV be noted that-the" y present developmentresides primarily in the sim'- pliedl brink; body construction-which ismade entirely' ofi structural. material, l'slightly' modiv ed ltoprovide guide slots and endpockets. Such parts as the curved yguide andsupporting vbar for guiding and supporting the chock? 'is made ofibentstock material and' is welded in place4 as yabovev described. The `sameis true of (the l Webs positioned'between the side Walls and which notonly function as cross-'braces butalso cooper-y ate with the lockingbars as isdvvellv knownn 1 the art rand' as fuily described irrmypriorpatl ents. The locking bar, ther means for holding.

andlocking the locking bar, and the inclined web l for vsliiftingtl'iebar forwardy when released to l necting beamHsaid beambeing'welded'tothe Iupper longitudinal portion of 1 ',liel`i-nn`erfaces of said angles,'slots iorm'edfiir theend tpoiftiori of prevent it from falling back andlocking'in instances where the chock does not vfall arefeaturesuvvhich`also ,are broadly shown and del-l scribed in my earlierpatents.

`As a result of the structure embodied `in the i present application itis possible ,to construct ,a

log bunk of available material, with the bunk needed Withoutspecialequipmentiand iivith-k a Whatilf. clairnfis:v

i capable of performing all of its functions in theA j s 'usual mannerand perhaps more important, lcapableofsupporting the maximum loadunderall conditions. It is alsoA possible because of .the simplifiedstructure embodying the use of tstr-uc-j z turalmaterial to make repairswhen and where 1f- A, log bunk including spaced: vertical side-fwallsiormed ateaclfr` end with parallel' longi-r" tudinally yextendingslots arranged in a commonl piane,l guide memberssecured togandextendingr from the inner fa'ces ,of the end portions of each: offsaidside walls,rsaid. guide members curving 1 downvvardiy'A and inwardly andterminating at their inner: ends below said slots, 'stakernerribers'having lateral kprojections adiaeenttheir' lower end'portons,said'proiections being adapt 'f pins extending controllocklarrnf'pivotecl t'ofeachof saidlpinsin'- end" of each of said sideWalls, separately formed downwardly and inwardly curved guide memberssecuredgtothelinner faces of each end of each of said"sidelwalls, stakemembers at each endofv said bunkfeach stake member includinginwardlyfefxtndirrglspaced arms, a pin extendin through said arms andinto guiding engagementvvith'the walls of said slots, and lateralprojecting'portiensformed atth'ebasefof lsaid stakes adapted to seatu'ponithe upper' end ofsaid' guide member'wl'le'rl"saidA pin -is initsinnermost position in said slots,v and to'swi'ngun'der andinengagementwith'the 'outerfface of saidguide mem bers assaidl pinsrlarefmoved toA their'outer posi'T tions in s"aiti"slot,"whereby said stakesmayV beI shiftedto either" a fixed; vertical position'y or tov aposition between the endsfoi the side walls of said "bunkp I v I l y3.-"A` bn'nk'for 'logging-pars" including a bunk body formed of spacedsidefangles and a conea'chv of the side angles, saidslt's'" beingl'iorizpn-Y tally alined, movable lstakespositioned inf'the ends 'ofsaid bunk tbody; and including inward- 1y extending space yann,s'giir'rsextending-through. the 'Quterend Pltens ,Qf seid affini said rms4 havingtheir yend portions'jex'tending laterally of.y said arms for movementwithin ysaid slots,` andA slotted guide blocks secured tothe v.innerfaces of said angles with tn ei'rxslots registering with the slots in;said z a ,ngles', said Y blacks partiallyl supporting'sai'd pins and'engagingthe outer faces..

of said spaced `turns. to. forrnlateral stops. for said stakes.

4.' A logbunk including spaced'.

walls formed at each' end with parallel longiLfA tudinally extending l.slotsafngd'n {a} common plane, guideamembersgsecu'rged, toand extendingfrom' the inner faces of the? endportins of eachk of `said-side wallssaidtguide" members curving downwardly andv inwardly *and .terminatingat.,y i theirfinnerends belowsaid slots-,stake members ,Y having.,lateral projections adjacent their lowery I endportionsgfsaidprojections being adapted yto.

engage.tittetopY and outer sides voisalidl guide members `uponrnbveinentof said stake from-up. per to; lower positions, lsaidrstakesfeachincluding-- a pair of spaced inwardly extending pivotarms formed- -Withtransversely extendingzalined open wings at their endportions, pinsextending through" saidvalined-openings yin the: outer' end' portions ofsaid'pivot. arms'and engagingwithin saidlon'-y gtudinally-extending.-guide-:slotsxa rcontrol lock arm- Apivoted to, each f of' sa-id pinsintermediate said: arms;l and a horizontal beamv connecting the 4upperportions oi 'said walls; f

fr yllriarnnmarex?w.-enarsvmnn:f y

